Year	Percent
2000-01-01	3.925
2001-01-01	3.325
2002-01-01	3.775
2003-01-01	4.050
2004-01-01	3.825
2005-01-01	3.675
2006-01-01	3.875
2007-01-01	4.275
2008-01-01	5.625
2009-01-01	11.050
2010-01-01	13.075
2011-01-01	14.075
2012-01-01	13.975
2013-01-01	12.400
2014-01-01	10.700
2015-01-01	8.900
2016-01-01	7.525
2017-01-01	5.875